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2012 (Vol. 4, Issue: 17)
Article Information:

High Speed Milling of Al2O3 Particles Reinforced Aluminum MMC

Nosratollah Solhjoei, Amir vafaei, Forood Khalilzadeh and keyvan vafaei
Corresponding Author:  Nosratollah Solhjoei 

Key words:  Flank wear, high speed machining, metal matrix composites, minimum quantity lubrication, surface roughness, ,
Vol. 4 , (17): 3015-3020
Submitted Accepted Published
January 03, 2012 January 25, 2012 September 01, 2012
Abstract:

High speed milling of various proportions Al2O3 particles reinforced aluminum-based Metal Matrix Composites (MMC) by coated carbide tools under different cutting fluid application conditions is presented in this paper. It is found that Built-Up Edge (BUE) formed easily in high speed dry milling of 10 wt% Al2O3 aluminum MMCs. The chip welding is significantly reduced and a better workpiece surface finish and lowering cutting force is achieved together with negligibly small tool wear under wet cutting and MQL (minimum quantity lubrication). Hence a very high cutting speed together with MQL is recommended to cut this type of MMCs. High speed dry milling of 15 wt% Al2O3 aluminum MMCs generates few BUE but accompanied with serious wear of the tool by abrasion. A better machined surface finish and an increased tool life than those under dry cutting and wet cutting are resulted when MQL is applied. Permeation of the oil mist to wet tool-chip interface is responsible for these advantageous effects. On the contrary, the wear due to the increasing amount of Al2O3 reinforced particles is so serious that there is little improvement in tool wear and workpiece surface finish in the machining of 20 wt% Al2O3 aluminum MMCs under MQL condition. In summary, high cutting speed with the aid of MQL is appropriate in machining aluminum MMCs containing fewer reinforced particles. Aluminum MMCs with reinforced particles content higher than 20 wt% should be cut at a lower cutting speed.
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  Cite this Reference:
Nosratollah Solhjoei, Amir vafaei, Forood Khalilzadeh and keyvan vafaei, 2012. High Speed Milling of Al2O3 Particles Reinforced Aluminum MMC.  Research Journal of Applied Sciences, Engineering and Technology, 4(17): 3015-3020.
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ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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